First of all to all those leftist who wil come in here and bash the messanger "i don't care".

You can not understand the Koran or Islam without the Hadith (another holy book) which is the word and deeds of the prophet Muhammed, which itself is not the spoken word of God but rather their doctrine and law and practice.
People who leave Islam are considerd apostates and according to there holy books should be killed.
According to Islam there God is merciful, loving, and compasionat. But if you don't worship the one God you are considered a infidel, putting you beneath their women and children. You either pay a fine (Jizya) or be killed.
Islam is one of the only religions that has laws for goverments inbedded in there religion. That is why countries like Iran, Yemen, and others went from being open and free to closed with Sharia in the 1970's.
According to some versus in the Koran infidels should be exterminated.
The Hadith speaks of the life and laws that Muhammed dictated through his talks with Allah. Some of these laws are:
6.1 You can have sex with the wives of your captives - so you can rape them.
6.2 You can marry a girl from the age of 6 and consummate the marriage at the age of 9.
6.3 You can hit your wife and you don't even have to have a reason.
6.4 A eye for a eye. You steal they chop of your hand.
6.5 If you are homosexual you must be executed.
6.6 If you have sex before marriage you wil be whipped and the female wil be stoned to death.
6.7 And last but not least; JIHAD is commanded, meaning if you can you should fight.
I wonder that if you read this why people are stil saying that ISIS is not Islam. If ISIS is not Islam why is that they become radicalized in Islamic ways?

Some simple questions:

How did the violent 'misunderstanding' of Islam become so widespread?
Why is it amongst the most devout and committed of Muslims?
What are Muslims doing to stop it.
What programs do you have in place to teach young Muslims to reject the extremist understanding of Islam?
There are no such programs. Why is that?
AND THE FINAL BIG QUESTION

If Islam is so fantastic, why do Muslims seek refuge in Christian countries rather than try to change the system where they come from?

Here is a rough quick edit. English does not make sense sometimes, but ill bet that your oral English is quite good because most of the mistakes were words that sound similar to the correct one. Wish you the best of luck!